The 23-year-old striker has 25 goals in 32 appearances for club and country this season, leaving him on course for his most prolific season yet, but frustrations regarding Everton's fruitless search for Champions League football have led the Belgian to believe his future lies elsewhere.

It is understood Lukaku could sign a new deal, but only if it contains an affordable release clause.

Should Everton decide to sell, they will expect to make a sizeable profit on the £28million they spent on him in 2014, ruling out all but the wealthiest European clubs. But where will he end up?

Here, MirrorSport takes you through the bookmakers' favourites...

Romelu Lukaku has been in sensational form this season (Image: Getty Images)

Arsenal

Arsenal - 18/1 (Image: AFP)

Odds: 18/1

With Alexis Sanchez almost certain to leave north London this summer, Arsenal will be in the market for a goal scorer and will certainly have funds to sepnd. Managerial instability at the club could, however, put Lukaku off and unless Arsenal's form improves they might find themselves in the Europa League next season.

Paris Saint-Germain

PSG - 14/1 (Image: Action Images via Reuters)

Odds: 14/1

PSG are long-time admirers of Lukaku. The Ligue 1 champions lost Zlatan Ibrahimovic last summer while Edinson Cavani will be 31 next season. As with Arsenal, money is unlikely to be an issue but with Cavani currently averaging a goal every game, Lukaku would not be a guaranteed starter in the French capital.

Atletico Madrid

Atletico Madrid - 12/1 (Image: AFP)

Odds: 12/1

Atletico have almost resigned themselves to losing top scorer and talisman Antoine Griezmann this summer and, as such, will not be short of money to spend. The Spanish side could offer Champions League football, a world class manager and the opportunity to play up front for a team that has reached the final of Europe's biggest competitions in two of the last three years.

Manchester United

Manchester United - 4/1 (Image: Man Utd/Getty)

Odds: 4/1

With Zlatan Ibrahimovic's contract up at the end of the season, Manchester United could be in the market for a new striker. Lukaku has a chequered past with manager Jose Mourinho but would likely jump at the chance to play with close friend Paul Pogba. As with Arsenal, though, United might not be in the Champions League next season.

Chelsea

Chelsea - 2/1 (Image: Getty)

Odds: 2/1

Lukaku's likeliest destination remains, as it has done since they sold him, Chelsea. Diego Costa wants to return to Spain and that could open up space for Lukaku, who grew up idolising Blues legend Didier Drogba.